Updated on 23 September 2026. What’s new: PMI's eligibility rule now counts months, not hours: 40 months of project scheduling with a secondary degree, 24 months with a four-year degree.
Open the schedule you are running this week. If it carries an approved baseline, a critical path that other people make decisions on, resource calendars that argue with each other and a change log that would have to survive an audit, you are already doing the work the PMI Scheduling Professional (PMI-SP) certifies. The credential is not a course in drawing bar charts. It asks whether you can build a schedule, defend it, and keep it honest while the project moves underneath you.

What follows is written for the people who keep that file open all day: planners, schedulers, PMO analysts and the delivery managers who own the dates. It covers who the credential genuinely suits, what PMI's five performance domains ask of you, the eligibility rule that stops more applications than the exam stops candidates, what a sitting costs, how to revise using the scheduling tool already on your desk, and what changes at work once the letters sit after your name.